Disconnect switch



July 7, 1931. K. s. WAGONER DISCONNECT SWITCH Filed Aug. 17, 1929 2 Sheets-Sheet l Zzzzrezior July 7, 1931. K. s; WAGONER DISCONNECT SWITCH Filed Aug. 17, 1929 2 Sheets-Sheet 2 v Zzzmezzi'az dazzrzatiz 5 Myanmar,

Patented July 1, 1931 mumn's. WAGONER, or on rAm-InL INoIs, Assieuon To ELEGTRICAL'ENGINEEBS EQUfIPMENTOOg-OF mmnosnsrnn-x, rumors, nooRPoRATIoN OF ILLINOIS r I r nisoouuncr swrrofi,

a Ap ncauonmed Aug-r1517, 1929. "seia m; 3 6,693,

,This' invention relates to electric switches and *inore, particularly to v stops,- especially; friction stops,' for switches. Z While this -.g1n-

vention} is especially concerned with disconnect switches'such' as are used in high voltage systems, it is not limited thereto, benign also;

of general application.

This one of the objects ofthe present inven tion jto-provide a switch with a friction stop? for." preventing a gradual accidental closure ofthe switch when the same is left open for prolonged periods of time. The stop exerts sufiicient pressure tokeeptheblade in its open position vunless itis moved to the closed position by an operator;

'It-is a furth, 'r object of the present invention to provides frlctionstop'whichinay bef built ias "a unit and applied to' switches al-'- ready infservice with a niinimum amount labor and "which will require no machinin cutting or drilling into the switches.

The onlyrlabor yth t- 's requiredjin apply ing'my stop' t'o switches already in servide' is' i that necessary 'F to first remove the switch in 1position andtthen V the drawings.

bledes' place i the stop replace the blades.

'It is a, furtheriobject of the present iI lV n? tion to provide a; stopwhich is appli'cablefito 7 back connected disconnect switches as well as to' front connected switches.

j The attainment of the above and further objects'of the present invention will be e13 v parent "from the. accompanying specification taken in conj unctio'n drawings in apartthereof. Y r

. arithedrawings r "Figure 1'; is a slde elevational' view of a double throw switch, nternin the, appli the principles of nf invention cation of thereto;

port for-the switch blades; i h

Figure 3 's a fragmentary side elevation showing the central {insulator off and the t m m blade members 25 and 26 embragce'the oppos sides of itheclip portion 17,"being pivo ted thereto by-means of a bolt indicated at 30 and being held infirm Contact with the clip porby a 'pair of spring washers 31f thereon; V

for thebla'de 'i' r 5 s' ew of we Plat ,iqry jhe friction StOPW IId 1 Figur -2 is a topiview Ofth 'yfim n d On th li 1 Thelblade T tion 17 asis view'o f' the stop plate forthe friction stop." Referring no tion asapplied to a' conventional double throw" switch. "It is, of course, understood the switch shown in Figurel, the grounded ore particularly toi Figure 1 .of'the drawings, I have shown my inven-' base plate il Inayfbe of any preferred 'conj-f c struction and supports three insulators indi-f cated atv 2, 3and4; 'Theinsulator2 supports j ermi al lip" in rece g e 111166011 ductorffiand'a' contac'ltfmemb'er 7 gwhich is;

adapted'to be contactedwith by aflblade 8 mounted; in a manner to be more fully :set fo a e d rip io pr e d u th insulator Inaflike manner the insulator l is provided with a'line terininal cl-ip 9 fOrrecarving a llne conductor 10 and with a ternii n'al 11' alsoadapted to be engaged by the 8, said terininalf 11,) being enga ged the "switch vblade when the blade is swung o-a position opposite that shown in novel friction stop for the-switch. The central insulator 3 is provided with an insulator cap 15, Whichis suitably secured' to the top'of theinsulatrf, W p v g; substantially:U shaped swit h cli is comprising twoclipiportions 1 7 and 18' joined together a connecting portion 19 1s suitably securedto the insulatorcap 15 in any desired" manner The switch bladeScomprises a;

number ofibladegsections 25, :26, 27 and; 28

sections=25and 26 are pivoted to the cliplpore tion '17 whereas the blade sections 27 and 28 arepivoted to the clip portion 18; The two and 32. The blade members 27 and 28 are similarly mounted.

The friction stop for the switch blades comprises a base plate 35, of a. shape such as is 5 shown more particularly in Figure 5, a stop Plats 6. of ap such a i h wn m re particularl in F igure 6, and a pair of guiding studs 3 and 38 which are embraced by compression springs 39 and 40, respectively. The plate 35 has notches 45 projecting from each end thereof, the notches 45 embracing a portion of the switch clip members 17 and 18, respectively, for holding the base plate against movement crosswise of the switch cli The base plate has a pair of tapped holes 46 formed the ein for receiving the uide studs 37 and 38, t ose studs being threa ed into the l s 1 The t P at 3. has s imber of oles 49.-49. formed therein. The top portion of the studs 37 and 38 pass freely through the holes 49-49,, the stop plate being sup.- PQl't d by the sprin s 39. k0,

When h s t h ad 8 s in th p sit sn shown in Figure 3, the surface 50. of the 2Q n th p n i g su ac o he bl sts. be r a n t step P a 3 Pre si g it i h h by c m s n h spr ngs. 35} and 40. During the switch opening: move. ment of blsdstt t t P a 36'is it pushed downward, thereby urther-com ress:

ug th p i s 9 nd 0 and s e h apprQflches a position at right angles. to the position shown in Fi ure. it permits the. p at 3 t move l gh 33 under the action of the springs 39 40; until the plate is again in substantially he position shown in the drawings. m he Pla a o d e sf e blade member 26 and the corresponding edge s of the b ade membe 2 are i n a m nt with the stop plate 36. It is to be noted that.

the. stop. plate, acting; under the foroeof the springs 39 and 40, tends to bias the switch lede. to the open position when the. blade &5: in, the vicinity of the. full open position, and

it tends to bias the blade to. the closed tion when the blade is in the vicinity d the.

closed po ti n: Thi is r hth r th blade is in the vicinity of the contact within the vicinity of the Contact he switch blade 8 is beveled at the corners; where. t e s w u no mal y rese e dge 5 as may be seen in Figure 3. Asmay be seen in this figure, the beveled corners present substantially flat surfaces to the top plate 36 whereby the blade 8 may be left in an open position intermediate its full closed and open positions, and be retained in that position'by the plate 36, should this be necessary. If the i9! friction stop member is applied to a single throw switch instead of to 'a. double tln'ow swit as h n n Figur hat i .7 to. a w t h herei he n la or ch as t m.- st 9- i h t i ted s h t s asat We ti e would be den ica It is apparent from the above description that I have. provided a friction stop for electric switches which is simple in construction and requires but few parts to accomplish the desired results. In view of the fact that the as plate 5. s not ted. 0. o herw e ri ystsil s o. t e s Qh cshs mstich it is quite a simple matter to install my friction stop upon switches already constructed since no additional machining; of the switch parts is necessary. This is a decided advantage since these friction stops can be built up as individual units and can be applied to switches already in service with a minimum amount of labor, the only labor required bens that necessaryto emove the wi b e ls l P a s he op b ween he finger c e it h l p nd than sp-l ss the blade Whil th w h hs h. hsw a treat assett s t h, tha s. 9 wh rein the i r mina sehh st shs s ch 5 nd 9 a br ght. in from the front of the. plate ,it is arsh st ha he pr ss-h ihv ih is qua y ap li ab e t0 ba sshh s sd sw t h hat o s itshss wh r in th nnec i n en from. th witc slip hr h he sh tcr tn he b h at h b ss, p te l-. t

n te npl ahse w h t requ ements c he. e ts-h a u es I hav h r in shown and described a preferred embodiment of my in? e i ht. it. s: how ver, s u ders o d" ha he inr htieh is no mite s h p ec e e h sh her in sho n, he shins being nsty llustrat v o he h sh i h t I shids n w and desire to ss r by L ter B ent is:

1- In c m ination a Pa of ace Pa al' s i th ps. s tch h h l memb rs p t e 011 he ips. a se. p e s hg st ss he a ias n msvahl w sspsst eret a stop plate between the base plate and the w ch blade a id ng s d es a e Oh the base plate and extending through an a hin i th step; P a s, an sp means between the two plates for pressingthe stop- Plats. a s h bla to act s. a. f ct ar o th blade, a d b e pl t dsai l tep, P ats h ea fi sf m hanic aste s h he switch and oth pl s e ng idable along the switch clip, b oth of said being free of portions encircling the clips 2 An electric switch including a pair of itch Cl p ret eatas y p r le c ntested. s tsh l e p v l y m n d. h the k ns, and an expansible unit comprising two nd pring mea s ngine'- t e P a spe said unit being inserted; between the switch sl ps nd; co press d by h la the movement, whereby the unit acts as a brake, fo th sw h. bl es oth f hi l plate eting free of mechanical fastening to the wi c a d. oth in sli s sr a oha h switclrc lips.

hhmb ha i n h switth ade; a. p v t support for the same, said blade having planar edges extending lengthwise and cross- Wise of the blade at the supported end thereof, a plate movable along the support; and bearing along one of those edges when the switch is fully closed and along the other edge when the switch is. open, spring means for urging the plate against the edges, and r a base plate slidable with respect to'the pivotal support and held against sliding move.- ment along the support solely by: the spring means, said base plate providing a bearing surface for the spring means.

In witness whereof, I hereunto subscribe my name this 12th da of Au S. AGONER,

st, A. D. 1929, 

